UN METODO DE PRODUCIR UN CUERPO HUECO DE PLASTICO ESPUMADO.

摘要

1,172,474. Cup-shaped containers. TETRA PAK AB. 5 Feb., 1968 [15 Feb., 1967], No. 5685/68. Heading A4A. [Also in Divisions B5 and B8] A cup-shaped container consists of an inner layer 9 of PVC and an outer layer 24 of foamed polystyrene, the edges of the inner layer being curled back over the edge of the outer layer to form a smooth lip 18.